Some reports on internet now suggest the aircraft had enough fuel. The Cessna Caravan blocked the 09 part of runway at Kilimanjaro. Intention was to land at 27 at Kili. However due to miscommunication between cockpit crew and ATC aircraft landed at runway 27 at Arusha instead.
Below a report of a passenger who was on the plane taken from
Ethiopian B767 in unscheduled landing at Arusha Airport | Wolfgang H. Thome's Blog
I was on it. We thought we were coming into Kilimanjaro for the landing, what seemed to be bad turbulence and surging on and off of the engines while still at altitude, very rough landing, pulled up metres short of the runway onto the grass. We were told very little, crew were not in control of the situation following landing. Stuck in the plane for 3.5 hrs because they were bringing stairs for disembarkment from Kilimanjaro. Eventually opened the emergency slide after much discontent in board. Crew were poor, but all thanks to the pilots for getting us down under the conditions. No injuries. Plane was unmarked (ie, no Ethiopian emblems), people had seat allocations for seats not even existent on that particular plane, told to wait to find an alternative seat once the plane was fully boarded. Fingers crossed for the next flight. Again, all credit to the pilots. Sorry for te long update!